fix: 图片显示缩略图异常问题

package.json

 {
   "name": "panda-xform",
-  "version": "5.2.0",
-  "description": "5.2.0 支持xls格式",
+  "version": "5.2.1",
+  "description": "5.2.1 图片显示缩略图异常问题",
   "keywords": [
     "panda-xform"
   ],

src/core/widgets/file/FileUpload/index.js

@@ -248,7 +248,7 @@ const FileUpload = (props) => {
             status: 'done',
             url: `${downloadFileUrl}?filePath=${list[i]}${site ? `&_site=${site}` : ''}`,
             sourcePath: list[i],
-            thumbUrl: list[i].includes('svg') ? await convertUrlToBase64(`${window.origin}${downloadFileUrl}?filePath=${list[i]}${site ? `&_site=${site}` : ''}`) : list[i],
+            thumbUrl: list[i].includes('svg') ? await convertUrlToBase64(`${window.origin}${downloadFileUrl}?filePath=${list[i]}${site ? `&_site=${site}` : ''}`) : `${window.origin}${downloadFileUrl}?filePath=${list[i]}${site ? `&_site=${site}` : ''}`,
             originFileObj: { "uid": uid },
             "response": { "code": 0, "msg": "Ok", "data": list[i], "stackTrace": null },
             "xhr": {},

src/core/widgets/file/FileUpload/index.less

@@ -28,7 +28,8 @@
       background: url('@{imgSrc}/Word.png');
       background-size: 100% 100%;
     }
-    &[type='xlsx'] {
+    &[type='xlsx'],
+    &[type='xls'] {
       background: url('@{imgSrc}/Excel.png');
       background-size: 100% 100%;
     }